Muối Chua Rau, Thực Chất Là Tạo điều Kiện để Quá ... - Cungthi.online

• Trang chủ
• Đề kiểm tra

Câu hỏi Sinh học

Muối chua rau, thực chất là tạo điều kiện để quá trình nào sau đây xảy ra? A.Phân giải xenlulozo, lên men lactic B.Phân giải protein, xenlulozo C.Lên men lactic và lên men etilic D.Lên men lactic Đáp án và lời giải Đáp án:D Lời giải:Lời giải Chọn D

Vậy đáp án đúng là D.

Câu hỏi thuộc đề thi sau. Bạn có muốn thi thử?

Bài tập trắc nghiệm 15 phút Bài 23: Tổng hợp và phân giải các chất ở vi sinh vật - Sinh học 10 - Đề số 2

Làm bài

Chia sẻ

Một số câu hỏi khác cùng bài thi.

• Ý nào sau đây là sai
• Trong ống 2 ở thí nghiệm lên men rượu (hình 24 SGK) có bọt khí nổi lên, đó là
• Vi sinh vật có khả năng tiết ra hệ enzim xenlulaza để phân giải xenlulozo trong xác thực vật nên con người có thể
• Ý nào sau đây là sai về quá trình phân giải protein?
• Vi sinh vật được sử dụng trong quá trình sản xuất sữa chua là
• Các axit amin nối với nh bằng liên kết nào sau đây để tạo nên phân tử protein?
• Trong quá trình tổng hợp polosaccarit, chất khởi đầu là
• Việc làm tương trong dân gian thực chất là tạo điều kiện thuận lợi để vi sinh vật thực hiện quá trình nào sau đây?
• Sơ đồ đúng về quá trình tổng hợp nên là axit nucleic là
• Muối chua rau, thực chất là tạo điều kiện để quá trình nào sau đây xảy ra?

Một số câu hỏi khác có thể bạn quan tâm.

• 1. Phenol được phát hiện vào năm 1834, khi nó được chiết xuất từ nhựa than đá. Phần lớn phenol được dùng để sản xuất poli(phenolfomanđehit) (dùng làm chất dẻo, chất kết dính).

  Anđehit axetic là chất khí không màu, mùi xốc, tan rất tốt trong nước và các dung môi hữu cơ, chủ yếu được dùng để sản xuất axit axetic.

  Từ axetilen, hãy viết phương trình phản ứng điều chế phenol và anđehit axetic theo sơ đồ sau, ghi rõ điều kiện (nếu có):

  →(1)benzen →(2)clobenzen →(3)natri phenolat →(4)phenol

  axetilen→(5) etilen→(6) anđehit axetic.

  2. Phân biệt: anđehit axetic (CH3CHO), axit axetic (CH3COOH), phenol (C6H5OH), etanol (C2H5OH), hexan (C6H14).

• Tiền lương là gì?

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.

  I was an MBA student in the USA and I lived in the university’s coed dormitory. In my culture, usually, if a woman talks to a man, it is a sign of romantic interest. (23)_____, in the first few days of school, I found it strange that so many women were talking to me and I was under the impression that some women on my dormitory floor were interested in me. To (24)__________ their politeness, I would buy   them flowers or offer small gifts, as is done in my country. However, I was quite surprised to see that these same women now  seemed (25)______around me. One was even quite offended and told me to leave her alone. Eventually I talked to the residence adviser on my floor to see what I was doing wrong, and he explained to me the way men and women usually interact in the USA. I was quite relieved to hear that (26)____ was wrong with me, but rather with the way I was interpreting my conversations with    women. Even though I did not find the love of my life while I was in the USA, I still made many good female friends afterwards (27)______I still maintain contact.

  Điền vào ô 27.

• Đoạn mạch RLC không phân nhánh được mắc theo thứ tự gồm: điện trở R = 80 Ω cuộn dây thuần cảm có độ tự cảm L = 1/π H và tụ điện có điện dung C = 10-3/4π F Điện áp hai đầu đoạn mạch có biểu thức u = U0cos100πt V. Tổng trở của mạch bằng:

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 16 to 20.

  If women choose to pursue a career once they have children, they often miss out on a close relationship with children. Helen Jamieson is a mother of three who has given up work to look after her children (16)_____. She strongly believes that women are pressurized to do too much, (17)_____ themselves to the absolute limit. In her own case, after six years of paid employment, Helen finally decided to call it a day. She says she initially found it hard to be at home, though she never misses the job itself. She admits that if she had had a brilliant career to begin (18) _____, she might feel differently now. Financially, she is no worse off (19)_____ before, as the cost of childcare and commuting exceeded her actual income. (20) _____ the government starts to give other tax incentives to working parents, she says she will not return to the workplace until her children are grown up.

  (20) _____ the government starts to give other tax incentives to working parents, she says she will not return to the workplace until her children are grown up.

• I’m having_________of trouble passing my driving exam.

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks

  An important point to remember if you like spending time out in the open air is that the human head doesn‟t work very well outdoors if it becomes too hot, cold or wet. That‟s why a hat is a good investment, whenever you are planning to go out and about. Surprisingly, a single waterproof hat with a brim will do the (16)______ adequately in most conditions.

  In cold climates, the problem is that the head is (17)______ heat all the time. As much as fifty to sixty per cent of your body‟s heat is lost through the head and neck, (18)______ on which scientist you believe. Clearly this heat loss needs to be prevented, but it‟s important to remember that hats don‟t actually keep you warm, they simply stop heat escaping.

  Just as important is the need to protect your neck from the effects of bright sunlight, and the brim of your hat will do this. If you prefer a baseball cap, (19)______ buying one that has a drop down „tail‟ at the back to stop your neck getting sunburnt.

  And in wet weather (20)______, hats are often more practical than pooling up the hood of your waterproof coat because when you turn your head, the hat goes with you, whereas the hood usually does not.

  Surprisingly, a single waterproof hat with a brim will do the (16)______ adequately in most conditions.

• We____more time with our children before they left for university. We were too busy with our jobs to think about that.

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 28 to 34.

  The weather is a national obsession in Britain, perhaps because it is so changeable. It's the national talking point, and most people watch at least one daily weather forecast. Most of the viewers imagine that the presenter does little more than arrive at the studio a few minutes before the broadcast, read the weather, and then go home. 

  In fact, this image is far from the truth. The two-minute bulletin which we all rely on when we need to know tomorrow's weather is the result of a hard day's work by the presenter, who is actually a highly-qualified meteorologist.

  Every morning, after a weather forecaster arrives at the TV studios, his/her first task of the day is to collect the latest data from the National Meteorological Office. The information is very detailed and includes predictions, satellite and radar pictures, as well as more technical data. After gathering all the relevant material from this office, the forecaster has to translate the scientific terminology and maps into images and words which viewers can easily understand. The final broadcast is then carefully planned. The presenter decides what to say and in what order to say it. Next a “story board” is drawn up which lays out the script word for word.     

  The time allocated for each broadcast can also alter. This is because the weather report is screened after the news, which can vary in length. The weather forecaster doesn't always know how much time is available, which means that he/she has to be thoroughly prepared so that the material can be adapted to the time available.

  What makes weather forecasting more complicated is that it has to be a live broadcast and cannot be pre-recorded. Live shows are very nerve-racking for the presenter because almost anything can go wrong. Perhaps the most worrying aspect for every weather forecaster is getting the following day's predictions wrong. Unfortunately for them, this is not an unusual occurrence; the weather is not always possible to predict accurately.

  These days, a weather forecaster's job is even more complicated because they are relied upon to predict other environmental conditions. For example, in the summer the weather forecast has to include the pollen count for hay fever sufferers. Some also include reports on ultraviolet radiation intensity to help people avoid sunburn. The job of a weather forecaster is certainly far more sophisticated than just pointing at a map and describing weather conditions. It's a job for professionals who can cope with stressful and challenging conditions.

  Creating a weather report is complex because _____.

• Not for all the money in the world________I do what you’re suggesting.

CóKhông